Bottom for tanks or vessels.



No. 690,242. Patented Dec. 3|, l90i.

:3. DE LACY.

BOTTOM FOB TANKS 0B VESSELS. (Application aim Aug. 1, 1901.)

(In Modal.)

V/All V////////////////% UNITED STATES PATENT ZQFFICE.

PETER DE LACY, OF NEW YORK, N. Y., ASSIGNOR TO ROBERT M. GREEN,

FRANK D. GREEN, ROBERT .M. GREEN, JR., AND LOUIS G. GREEN, TRAD- ING AS FIRM OF ROBERT M. GREEN & SONS, OF PHILADELPHIA, PENN- SYLVANIA.

SPECIFICATION forming part of Letters latent N 0. 690,242, dated December 31, 1901. Application filed'August 1, 1901. Serial No. 70,545. (No model.)

To aZZ whom it may concern:

Be itknownthatLPETERDE LACY,acitizen of the United States, and a resident of New York city, New York, have invented certain Improvements in Bottoms for Tanks or Vessels, of which the following is a specification.

My invention relates to bottoms for tanks 01' vessels used for containing liquids of various sorts, but more especially to the vessels used as reservoirs for aerated or carbonated liquids, the object of my invention being to provide a bottom that will fully support the interior lining of such vessels and at the same time prevent the shearing action on the rivets used for holding such bottom to the tank or vessel.

My invention is fully illustrated in the accompanying drawings, in which Figure 1 is a sectional view of a tank or vessel of this character having a bottom made in accordance with my invention. Fig. 2 is a sectional View showing the parts of such bottom detached, and Fig. 3 is a sectional View illustrating a detail of the invention.

In the accompanying drawings, 1 represents the cylindrical casing of the vessel or tank, having an inner lining 2. The cylindrical casing of the tank is usually a section of iron or steel tubing, and the lining is usually of block-tin, very thin and of such character that it may be forced against the inner wall of the casing by the pressure of the liquid contained therein. I

Secured to the lower portion of the easing 1 by means of rivets 3 and projecting some distance below said casing is the bot tom hoop 4. The bottom proper of the tank or vessel is shown at 5 and consists of a dishshaped member provided with a flange 6,

meeting the under edge of the casing 1. It is desirable that a flush joint be made at this point, and for the purpose of insuring the making of such joint the lower portion of the casing, as well as the edge of the flange 6, is

faced or trimmed by grinding or other approved means to a true surface.

After the bottom hoop 4 has been secured to the casing 1 the lining 2 is slipped into said casing until its bottom is in such position that the bottonr5 may be put in place abutting the lower edge of the casing and forming a perfect support for said lining. After this has been done the bottom-support 7 is set in place and is confined to the bottom hoop 4 by means of rivets 8, so as to keep the flange 6 of the bottom 5 in permanent contact with the lower edge of the casing. The space 9 between the bottom-support 7 and bottom 5 may then be filled in with lead' or other molten metal, as shown at 10 in Fig. 3.

The bottom-support 7 is preferably provided with internal strengthening-ribs, as shown. 7

As heretofore made the bottoms of tanks or vessels of this character have most of the strain imposed upon the rivets, and when carelessly handled a blow against the bottom hoop or bottom-support, caused by dropping the vessel or tank to the ground or sidewalk,

threw all the strain upon the rivets and a shearing action took place between the bottom hoop and the casing. tion, however, all such danger is removed, as the bottom proper is interposed between the lower edge of the casing and is firmly confined therein, so that any blow against the bottom hoop or the bottom-support will be transmitted to and taken up by the casing without affecting the rivets.

Having thus described my invention, I claim and desire to secure by Letters Patent- 1. The combination with the body of a vessel, of a hoop secured to the bottom of the same by rivets, abottom consisting of adished plate having an annular rim in alinement.

with and abutting the lower edge of the body of the vessel, a support riveted to the hoop and supporting the bottom, whereby the shocks to which the bottom of the support and hoop are subjected are transmitted vertically to the body of the vessel and strain on the rivets avoided, substantially as described.

2. The combination with the bodyof avessel, of a hoop riveted to the bottom of the body of said vessel, a bottom consisting of a In my construcdished plate having an upwardly-projecting annular arm in alinement with and abutting the lower edge of the body of the vessel, a support for the bottom riveted to the hoop, and filling material interposed in the space between the botton1,the support and the hoop, whereby the, shocks to which the bottom of the support and hoop are subjected are trans mitted vertically to the bod yet the vessel and 

